In a saucepan, bring the water, vinegar and sugar to a boil. Reduce the heat to a simmer and cook just long enough for the sugar to melt. Add the salt and stir to melt.
Remove from heat.
In a saucepan, bring the water, vinegar and sugar to a boil. Reduce the heat to a simmer and cook just long enough for the sugar to melt. Add the salt and stir to melt.
Remove from heat.
Layer your zucchini, the carrot and celery if you are adding them, shallots and garlic in a quart jar or other glass container and sprinkle the peppercorns, red pepper flakes and dill in between layers as you go.
Pour the vinegar mixture over the zucchini to cover completely and then cover. Chill in the refrigerator for at least four hours before serving. The pickles will keep in the fridge for about a week and a half.
